5x + 7 = 3x - 5
Subtract 3x from both sides: 2x + 7 = -5
Subtract 7 from both sides: 2x = -12
Divide both sides by 2: x = -6
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3x5+4=19
2+3*5 = 2 + 15 = 17
3x5
3x5 + 4x8 does not have a solution because it is not an equation. Are you looking for it's derivative? That would be: 15x4 + 32x7 Did you want it's indefinite integral? ∫(3x5 + 4x8) dx = x6/2 + 4x9/9 + C Or did you actually mean "three times five plus four times eight"? If so, the answer is 47.
95